'''
This is a small review of CSI 31.
Omitted from the review, but to be covered:
  - Sets, Dictionaries
  - Classes
'''


#################
## Reading Code #
#################


print("*****************\n\nREADING PROBLEM 1")
k = -5
if k > 0:
    print(k)
elif k < -5:
    print(k*2)
elif k == -4.9:
    print(k+2)
else:
    print(k - 1)



print("*****************\n\nREADING PROBLEM 2")
L = [2,9, 2,1]
X = L
X[2] = 0
print(L)



print("*****************\n\nREADING PROBLEM 3")
def F(y,L,x):
      L[2] = x
      L[3] = L[2]
      L[2] = 9
      y = x + y
        
      return y

x, z = 2, 70
myList = ['one', 8, 'two', 'three', 100]

z = F(z, myList, x)

print("x:",x)
print("z:",z)
print("myList:", myList)





print("*****************\n\nREADING PROBLEM 4")
for x in range(3):
    for y in range(2,4):
        print(x,y)
# Modify the above code so that
# it prints out
# "point 1 is: (0,2)"
# "point 2 is: ..."
# ETC.














################
# Writing Code #
################


# 1
# Write a function that takes a list as input
# and outputs the sum of the squares of the entries
# in the list.


# 2
# Write a program that takes input from the
# user until "Enter" is hit with no number.
# The program outputs the value of the
# largest and smallest number inputed.
# Do this program in two ways:
# 1- First with lists, then
# 2- Without lists.
# After it works, add error checking:
# For example, if the user inputs a string, inform them of
# the error and ask them for a valid input.


# 3
# Write a program (use for-loops) that creates a list
# of tuples where each tuple is
# the pair (i,j) where "i" can be any number between 1 and 5,
# while "j" can be any letter between A and D, e.g.
# the list starts like [(1,'A'), (1,'B'), ...]


# 4
# Write a program that takes a sentence
# as user input and then prints out the
# number of 4-letter words in the sentence.